Mascara brush



FIG. 1 is a perspective view of a mascara brush showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an enlarged detail view of the encircled region from FIG. 1 ; and,

FIG. 9 is an enlarged detail view of the encircled region from FIG. 2 .

The dash-dot broken line circles in FIGS. 1, 2, 8, and 9 , are for the purpose of enlarged view indicators, and form no part of the claimed design. 

CLAIM The ornamental design for a mascara brush, as shown and described. 